Extension book-case



(No Model.)

J. D. WALSH.

EXTENSION BOOK CASE.

No. 348,252. Patented Aug. 31, 1886.

W] T zVESSES 11V VEN TOR i7 MK wm ATTORNEY NITED STATES PATENT OFFI E.

JOHN D. \VALSH, OF OOVINGTON, KENTUCKY.

EXTENSION BOOK-CASE.

SPECIFICATION forming part of Letters Patent No. 348,252, dated August31, 1886.

Application filed January 11, 1886. Serial No. 188,270. (No model.)

To all whom it may concern.-

Be it known that I, JOHN D. \VALSH, of Covington, Kenton county,Kentucky, have invented a new and useful Improvement in .FoldingExtension Book-Cases, of which the following is a full, clear, and exactspecification, reference being had to the accompanying drawings, inwhich- Figure 1 is a perspective View of my bookcase. Fig. 2 is a viewin perspective of one corner of my book-ease.

Similar letters of reference in the several drawings denote the sameparts.

My invention relates to a system of portable shelves, and moreespecially to such a system when it is used as a portable extensionbook-case.

The advantage of my system, in addition to being portable, is in thesmall amount of lumber required. for a book-case of a given capacitycompared with an ordinary book-case,

- and also in the case and simplicity with which it is put together orenlarged.

My invention consists, reference being had to the accompanying drawings,of the side pieces, A and A, the top and bottom pieces, B B and O C, andof the means for rigidly connecting these pieces. The pieces 0 and O B Bare spliced on their inner ends, having the tongues or projections/"fand f f. The outer ends of the pieces 0 G and B B are cut in dovetailtongues,whieh fit into corresponding dovetail grooves in the end of theend piece, A, as shown in Fig. 2, and the inner ends of A and A are cutso that they interlace or overlap. The pieces B B are made in everyrespect as G C. The center upright pieces, A and A, are in all respectssimilar to A and A.

m m are braces extending from the end pieces, A and A, to the toppieces, B and B, and to the bottom pieces, 0 and G.

o 0 are screw eyes let into the upright pieces and serve as a supportfor the shelves n a. By means of said screw-eyes the height of any oneshelf and the distance between shelves may be readily adjusted. I obtainby this means a decided advantage over the ordinary book-shelf usingnotched pieces.

E is a metal plate on the outside pieces, A and A, to which the rod F isattached, said rod F being in two pieces, one on each side of the nut H,which nut H serves to lengthen and shorten the said rod F and so to bindthe book-case together.

The overlapping ends of the pieces A A and A and A may be of any desiredlength, in order that the rod F may be higher or lower in said laps, asthe relative distances between shelves may require.

It is evident that the combined effect of the rod F and the braces mserves to render the book-case extremely rigid, however light the piecesused to make it.

If it be desired to extend this bookcase, it may be done by insertingadditional pieces composed in all respects as are the center pieces(shown as A and A") and additional top and bottom pieces meshing withthetongues ff and ff of pieces 0 and C. It will be seen that the piecesA and A fit into the top and bottom pieces with a dovetail, as at 1),Fig. 1. My book-case may also be made with the upright pieces unbroken.

Having thus described my invention, what I claim as new, is

1. In a portable book-case, the top pieces and the bottom pieces cut soas to inter-mesh, and held together by a central upright piece whichfits into them horizontally with a dovetail, substantially as described.

2. In a book-case, the clamping-piece E, the rod F, the nut II, the endpieces of said bookcase, and the intermeshing top and bottom pieces ofsaid book-case, substantially as de scribed.

The foregoing specification of my invention signed by me this 2d day ofJanuary, A. l). 1886.

JOHN D. VALSH.

Witnesses:

OLIVER B. J ONES, J EPTHA GARRARD.

